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Mac and nRF Connect Programmer do not recognize USB connected Thingy91

My mac (and the nRF connect Programmer) no longer recognizes my Thingy91 when I connect it via a micro-USB. I am unable to use the nRF connect Programmer to flash my device.

Background Info:
I was able to put it into serial recovery mode (SW3 and Switching device on) - in order to flash the firmware and modem of nrf92... Once I attempted the flash, it completed step 1/2 and after leaving it for 30+ mins it did not finish step 2/2, and a message "Target device closed" was seen in the logs. I was forced to then restart the connect Programmer.

Following this, I am no longer able to boot my thingy91 into serial recovery mode using SW3 however I still can with SW4 which I am reading is only for flashing nrf52... things rights?

Lastly, my computer no longer recognizes the device, and the NRF Connect programmer only recognizes it when I put it in serial recovery mode via the SW4 button.

Please advise, and thank you for your time.

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